Patents Assigned to Toshiba Silicone Co., Ltd.
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Patent number: 4714734Abstract: Rubber compounds comprising a specific type of polyorganosiloxane of the following formula ##STR1## in which R and R' independently represent a hydrocarbon substituent and n is an integer of not smaller than 3 provided that at least 6 mole % of the substituents R and R' consists of a hydrocarbon group having Small's molecular attraction constant not smaller than 350. Carbon black is added to the polyorganosiloxane whereby various physical properties are improved including breaking strength, water and hot water resistances. The rubber compound may further comprise at least one organic rubber other than the above polyorganosiloxane.Type: GrantFiled: February 25, 1986Date of Patent: December 22, 1987Assignees: Bridgestone Corp., Toshiba Silicone Co., Ltd., Japan Synthetic Rubber Co., Ltd.Inventors: Takatsugu Hashimoto, Akihiro Maehara, Seisuke Tomita, Yuichi Funahashi, Junichiro Watanabe, Kazuo Sugiura, Hironori Matsumoto
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Patent number: 4657965Abstract: A silicone elastomer composition which has novel crosslinking points comprises (A) 100 parts by weight of a polyorganosiloxane of a polymerization degree of at least 20, wherein the organic groups are selected from monovalent substituted and unsubstituted hydrocarbon groups and are attached to silicon atom, and at least two of the organic groups are monovalent hydrocarbon groups possessing at least five carbon astoms and a carbon-carbon double bond bonded to a silicon atom via at least one carbon atom, (B) 5 to 200 parts by weight of an inorganic filler having a specific surface area of at least 50 m.sup.2 /g, and (C) 0.1 to 25 parts by weight of a vulcanizer selected from the group consisting of sulfur, sulfur donor, substituted or unsubstituted alkylphenol resins, and quinoids.Type: GrantFiled: October 21, 1985Date of Patent: April 14, 1987Assignees: Toshiba Silicone Co., Ltd., Japan Synthetic Rubber Co., Ltd.Inventors: Junichiro Watanabe, Yuichi Funahashi, Kazuo Sugiura, Hironori Matsumoto
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Patent number: 4656221Abstract: Disclosed is a composition for concealing graze marks on a transparent glass bottle which comprises:(A) 100 parts by weight of polydiorganosiloxane having a viscosity of 10 to 100,000 cSt at 25.degree. C.Type: GrantFiled: June 14, 1985Date of Patent: April 7, 1987Assignees: Toshiba Silicone Co., Ltd., Asahi Breweries Ltd.Inventors: Akitsugu Kurita, Kazou Maruyama, Akira Okusa, Haruo Hayashi
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Patent number: 4652618Abstract: Polyorganosiloxane compositions for surface treatment comprising:(A) a polydiorganosiloxane having a viscosity of 50 cSt to 10,000,000 cSt at 25.degree. C., the terminal units of which are blocked by hydroxy groups;(B) a curing agent which comprises a mixture or a partially reacted mixture of:(1) a polyorganosiloxane composed of structural units represented by the formula:(R.sup.1).sub.a SiO(.sub.4-a)/2wherein, R.sup.1 s are the same or different and each represents a hydrogen atom or a substituted or unsubstituted monovalent hydrocarbyl group and at least two R.sup.1 s out of the total R.sup.1 s in a molecule are monovalent hydrocarbyl groups substituted by an epoxy-containing group; and a represents an integer of 1 to 3, and having a polymerization degree of 10 to 5,000;(2) a silane and/or a siloxane having a substituted or unsubstituted amino group bonded to a silicon atom via at least one carbon atom and also having at least one alkoxy group bonded to a silicon atom;at a proportion of 0.Type: GrantFiled: December 6, 1985Date of Patent: March 24, 1987Assignee: Toshiba Silicone Co., Ltd.Inventors: Heiji Sumida, Hiroshi Kimura
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Patent number: 4649208Abstract: A process for making an organosilicon compound containing an amino group, which comprises reacting an allylamine with the hydrosilyl group of a silicon compound represented by the formula:H(R.sup.1).sub.n Si(OR.sup.2).sub.3-nwherein R.sup.1 represents monovalent groups which may be identical of different and are selected from the group consisting of substituted or unsubstituted hydrocarbon groups, di- or trimethylsilyl groups and mono- or polyorganosiloxanyl groups; R.sup.2 represents an alkoxy-substituted or unsubstituted alkyl group; and n represents an integer of 0 to 3,in the presence of a complex of platinum with an olefin or its derivative, said reaction being carried out further in the presence of an amino compound represented by the formula:N(R.sup.3).sub.3 or HNQwherein R.sup.Type: GrantFiled: December 20, 1985Date of Patent: March 10, 1987Assignee: Toshiba Silicone Co., Ltd.Inventors: Michio Zenbayashi, Noria Sato
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Patent number: 4640968Abstract: A polysiloxane containing an ethylidene norbornyl group possesses a terminal group represented by the formula: ##STR1## wherein R.sup.1 stands for a monovalent hydrocarbon group, a hydroxyl group, an alkoxy group, or at least one of the hydrocarbon groups represented by Y, and each R.sup.2 stands for the same or different groups selected from the class consisting of hydrogen, monovalent hydrocarbon groups, and a group represented by R.sup.1 wherein R.sup.1 has the same meaning as defined above, and being substantially in the form of a straight chain, 0 to 100 mol %, providing that 100 mol % is excluded where neither of the R.sup.1 's in the terminal groups is a hydrocarbon group represented by Y of the component units being represented by the formula: ##STR2## wherein each R.sup.3 's stand for the same or different groups selected from the class consisting of hydrogen and monovalent hydrocarbon groups and 100 to 0 mol %, providing that 0 mol % is excluded where neither of the R.sup.Type: GrantFiled: October 15, 1985Date of Patent: February 3, 1987Assignee: Toshiba Silicone Co., Ltd.Inventors: Junichiro Watanabe, Yuichi Funahashi, Kazuo Sugiura, Hironori Matsumoto
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Patent number: 4625043Abstract: An ethylidenenorbornyl dimethylmethacryloxysilane represented by the general formula (I): ##STR1## wherein Y represents the formula: ##STR2## or the formula: ##STR3##Type: GrantFiled: February 26, 1986Date of Patent: November 25, 1986Assignee: Toshiba Silicone Co., Ltd.Inventor: Nobuhiro Saito
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Patent number: 4623741Abstract: An ethylidenenorbornyl group-containing chlorosilanes compound represented by the general formula:Y.sub.a (R.sup.1).sub.b Si(Cl).sub.4-a-bwherein R.sup.1 stands for a saturated or unsaturated monovalent hydrocarbon group of 1 to 8 carbon atoms, Y for ##STR1## a for an integer of the value of 1 to 3, b for an integer of the value of 0 to 2, and a+b for an integer of the value of 1 to 3.Type: GrantFiled: January 24, 1986Date of Patent: November 18, 1986Assignee: Toshiba Silicone Co., Ltd.Inventors: Junichiro Watanabe, Yuichi Funahashi
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Patent number: 4623739Abstract: A nitrogen-containing organosilicon compound represented by the general formula:(Y.sub.a R.sup.1.sub.3-a Si)bNHR.sup.2.sub.2-bwherein R.sup.1 stands for a saturated or unsaturated monovalent hydrocarbon group of 1 to 8 carbon atoms, R.sup.2 for a saturated or unsaturated monovalent hydrocarbon group of 1 to 6 carbon atoms, Y for ##STR1## a for an integer of the value of 1 to 3, and b for an integer of the value of 1 to 2.Type: GrantFiled: January 24, 1986Date of Patent: November 18, 1986Assignee: Toshiba Silicone Co., Ltd.Inventors: Junichiro Watanabe, Yuichi Funahashi
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Patent number: 4602959Abstract: Disclosed is a method for preventing multiplication of algae which is characterized by coating the surfaces of solid materials with a silicone emulsion composition prepared by emulsion polymerization of:(1) 0.1 to 60% by weight of a reaction product prepared by reacting(A) 50 to 99.9% by weight of a polydiorganosilozane having more than one silanol group on the average in each molecule and having a viscosity of 5 to 10,000 cSt at 25.degree. C. with(B) 0.1 to 50% by weight of a product prepared by reacting (a) 1 mol of a compound represented by the formula: ##STR1## wherein Q.sup.1 is a monovalent group selected from the group consisting of a hydrogen atom, --CH.sub.3, --CH.sub.2 CH.sub.2 NH.sub.2 and --CH.sub.2 CH.sub.2 NHCH.sub.2 CH.sub.2 NH.sub.2, R.sup.1 is a divalent hydrocarbon group having 1 to 4 carbon atoms, R.sup.2 and R.sup.3 are monovalent hydrocarbon groups each having 1 to 4 carbon atoms, and a is an integer of 0 or 1,with (b) 0.5 to 3.Type: GrantFiled: April 17, 1985Date of Patent: July 29, 1986Assignee: Toshiba Silicone Co., Ltd.Inventors: Akitsugu Kurita, Shinji Kida, Masaaki Otsuki
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Patent number: 4599440Abstract: Disclosed is an organocyclosiloxane which comprises a compound having the following formula: ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3, which may be the same or different, represent a hydrogen atom or a monovalent hydrocarbon group having 1 to 8 carbon atoms; Y represents ##STR2## m is an integer of 3 to 5 and n is an integer of 1 to m.Type: GrantFiled: August 30, 1985Date of Patent: July 8, 1986Assignee: Toshiba Silicone Co., Ltd.Inventors: Junichiro Watanabe, Yuichi Funahashi
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Patent number: 4559387Abstract: A primer composition comprising(A) 100 parts by weight of a silane-modified resin obtained by reacting a resin formed by introducing an epoxy group and a hydroxyl group (which may be partially esterified) into a polymer comprising 1,3-pentadiene as a main monomer and having an iodine value of 200 to 500 and an average molecular weight of 350 to 10,000 with a carbon-functional silane,(B) 40 to 600 parts by weight of a mercapto group-containing silane represented by the general formula:HS(CH.sub.2).sub.a Si--OR.sup.1).sub.3wherein a is an integer equal to 2 or 3, and R.sup.1 is an alkyl group having 1 to 4 carbon atoms,(C) 10 to 400 parts by weight of an amino group-containing silane represented by the general formula ##STR1## where X stands for a substituted or unsubstituted amino group selected from the group consisting of:--N(R.sup.3).sub.2,--NH(CH.sub.2).sub.2 N(R.sup.3).sub.2 and--NH(CH.sub.2).sub.2 NH(CH.sub.2).sub.2 N(R.sup.3).sub.2,b is an integer equal to 3 or 4, c is an integer equal to 0 or 1, R.sup.Type: GrantFiled: October 5, 1984Date of Patent: December 17, 1985Assignee: Toshiba Silicone Co., Ltd.Inventors: Isao Endo, Joji Kuniya
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Patent number: 4559319Abstract: A curing agent composition for silicone elastomers, comprising an organic tin compound which is solubilized in water with the use of a nonionic surfactant selected from the group consisting of polyoxyethylene sorbitol fatty acid esters and polyoxyethylene sorbitan fatty acid esters and a polyvalent alcohol.Type: GrantFiled: March 14, 1985Date of Patent: December 17, 1985Assignee: Toshiba Silicone Co., Ltd.Inventors: Akitsugu Kurita, Tetsuo Fujimoto
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Patent number: 4555545Abstract: A composition for coating, which comprises:(1) 100 parts by weight of film forming components comprising:(A) 10 to 90% by weight of an organosilane triol of the following formula and/or its partial condensate:R.sup.1 Si(OH).sub.3wherein R.sup.1 represents a monovalent group selected from the group consisting of alkyl groups having 1 to 3 carbon atoms and aryl groups, and(B) 90 to 10% by weight of colloidal silica; and(2) 5 to 40 parts by weight of a copolymer of:(C) a compound represented by the formula: ##STR1## wherein Q represents >C.dbd.O or the following formula: ##STR2## wherein each X may be either the same or different and each represents hydrogen atom or hydroxyl group, of which at least one is hydroxyl group, and R.sup.2 represents an alkyl group having 1 to 18 carbon atoms, and(D) an epoxy group-containing trialkoxysilane.Type: GrantFiled: February 1, 1985Date of Patent: November 26, 1985Assignee: Toshiba Silicone Co., Ltd.Inventors: Hiroshi Kimura, Ikurou Mori, Bunjirou Murai
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Patent number: 4555559Abstract: A method for making a novel copolymer, which comprises: reacting(A) a compound represented by the formula: ##STR1## wherein Q represents >C.dbd.O or the following formula: ##STR2## wherein each X may be either the same or different and each represents hydrogen atom or hydroxyl group, of which at least one is hydroxyl group, and R.sup.1 represents an alkyl group having 1 to 18 carbon atoms, with(B) an epoxy group-containing trialkoxysilane and/or an epoxy group-containing dialkoxysilane in the presence of(C) an aluminum chelate compound represented by the formula:Al(OR.sup.2).sub.n L.sub.3-nwherein R.sup.2 represents an alkyl group having 1 to 4 carbon atoms, L represents the following formula: ##STR3## where R.sup.3 represents an alkyl group having 1 or 2 carbon atoms, R.sup.4 represents an alkyl group or an alkoxy group each having 1 or 2 carbon atoms,and n is an integer of 0, 1 or 2.Type: GrantFiled: February 1, 1985Date of Patent: November 26, 1985Assignee: Toshiba Silicone Co., Ltd.Inventors: Hiroshi Kimura, Ikurou Mori, Bunjirou Murai
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Patent number: 4552688Abstract: The present invention provides an electroconductive silicone elastomer composition comprising:(A) 100 parts by weight of a polydiorganosiloxane having an average degree of polymerization of 500 to 12,000, wherein each polymer molecule contains at least two vinyl groups bonded to silicon atoms;(B) 100 to 500 parts by weight of nickel-coated carbon;(C) 0.1 to 5 parts by weight of a polyorganohydrogensiloxane, and(D) 0.2 to 300 ppm based on the total amount of (A), (B) and (C) of platinum metal or platinum compound as platinum atom.Type: GrantFiled: April 13, 1984Date of Patent: November 12, 1985Assignee: Toshiba Silicone Co., Ltd.Inventors: Ryuji Sakamoto, Taro Yamazaki
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Patent number: 4543404Abstract: There is disclosed a primer composition comprising[A] a reaction product of:(1) a hydroxyl group-containing organic compound composed of;(a) an epoxy group-containing alcohol represented by the general formula [I]: ##STR1## wherein, R.sup.1 is a hydrocarbon group having 1 to 15 carbon atoms, or an organic group in which the same or different hydrocarbon groups are bonded to each other by an ether bond or an ester bond; and each of m and n is a value of 1 or more; and(b) a hydroxyl group-containing (meth)acrylate represented by the formula [II]:(CH.sub.2 .dbd.CR.sup.2 COO).sub.a R.sup.3 [II]wherein R.sup.2 is a hydrogen atom or a methyl group; R.sup.3 is a substituted or unsubstituted hydrocarbon group, or a group in which the same or different hydrocarbon groups are bonded to each other by ether bond or the ester bond, the R.sup.Type: GrantFiled: August 27, 1984Date of Patent: September 24, 1985Assignees: Negami Chemical Industrial Co., Ltd., Toshiba Silicone Co., Ltd.Inventors: Shunji Sugano, Koichi Hagiwara, Isao Miura, Akira Honto
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Patent number: 4537944Abstract: The present invention provides a room temperature curable polyorganosiloxane composition comprising:(A) 100 parts by weight in total of:(1) a polydiorganosiloxane of the general formula: ##STR1## (2) a silane of the general formula:R.sub.b.sup.3 Si(OR.sup.4).sub.4-b(B) 0.01 to 10 parts by weight of a curing catalyst;(C) 0.5 to 10 parts by weight of a nitrogen-containing silicon compound in which the nitrogen atom is bonded with a silicon atom through one or more carbon atoms and said nitrogen atom is further bonded directly with said silicon atom or another silicon atom; and(D) 0.05 to 50 parts by weight of a polyoxyalkylene chain-containing compound.Type: GrantFiled: June 21, 1984Date of Patent: August 27, 1985Assignee: Toshiba Silicone Co., Ltd.Inventors: Takafumi Imai, Fumihiko Kobayashi
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Patent number: 4528390Abstract: A process for preparing polymethylsilsesquioxane comprising hydrolyzing and condensing methyltrialkoxysilane or its partially hydrolyzed condensate in an aqueous solution of ammonia or an amine.Type: GrantFiled: June 21, 1984Date of Patent: July 9, 1985Assignee: Toshiba Silicone Co., Ltd.Inventor: Hiroshi Kimura
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Patent number: 4515979Abstract: A process for preventing odor in a polyoxyalkylene group-containing polyorganosiloxane comprising adding phytic acid to the polyoxyalkylene group-containing polyorganosiloxane during and/or after its production.Type: GrantFiled: June 21, 1984Date of Patent: May 7, 1985Assignee: Toshiba Silicone Co., Ltd.Inventors: Masaaki Otsuki, Shinji Kida